Bow contact-shoe for trolleys.



M. ERGENZINGER & H. S. DAY.

BOW CONTACT SHOE FOR TROLLE-YS.

APPLIOATION FILED JUNE 25, 1910.

Patented Aug. 19, 1913.

2 SHEET SSHEET 1.

7K INVENTORS coLummA PLANOGRAPII co. WASHINGTON n.

M. ERGENZINGER & H. S. DAY.

BOW GDNTAGT SHOE FOR TROLLEYS.

APPLICATION FILED JUNE 25, 1910.

1,070,432, Patented Augbl9, 1913.

2 SHEETS-SHEET 2.

WITNESSES:

COLUMBIA PLANOGRAPH CO\VASIHNGTION, D, c,

UNllTiED STATES PATENT @FFTQ MARTIN EBGENZINGER, OF ATLANTA, GEORGIA, AND HENRY S. DAY, OF BROOKLYN, NEW YORK, ASSIGNOES TO WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

BOW conrnor-snon roe TaoLLEYs.

Specification of Letters Patent.

Patented Aug. 19,1913.

Application filed June 25, 1910. Serial No. 568,916.

To all whom it may concern:

Be it known that we, MARTIN ERGENZIN- can, a citizen of the United States, and a resident of Atlanta, in the county of Fulton and State of Georgia, and HENRY S. DAY, a citizen of the United States, and a resident of Brooklyn, New York, in the county of Kings and State of New York, hax e invented a new and useful Improvement in Bow Contact-Shoes for Trolleys, of which the following is a specification.

Our invention relates to traveling contact members for electric cars and other railway vehicles which are supplied with energy from an overhead conductor, and it has special reference to trolleys of the sliding bow type which are supported on pantograph frame structures.

The object of our invention is to provide a simple and durable contact shoe comprising a plurality of independent resilient contact strips whereby an excellent contact may be maintained between the shoe and the conductor with which it is adapted to engage.

It is particularly difficult to maintain a good contact between a trolley wire and a traveling contact member which is attached to a vehicle operating at very high speeds, since it is impossible to avoid slight irregularities in the conductor and also to prevent a certain amount of vibration in the trolley structure.

According to our present invention, we provide a bow contact shoe for pantograph trolleys having a plurality of independently yielding parts which are mounted on springs in order to minimize the diiiiculties referred to above.

Figure 1 of the accompanying drawings is a front elevation of a portion of a trolley structure embodying our invention, and Fig. 2 is an end elevation of the structure shown in Fig. 1.

Referring to the drawings, the structure here shown comprises a horizontal rod 1, which may be supported in any suitable manner, preferably forming a part of pantograph structure 2, a portion only of which is shown, and a plurality of contact shoe members 3, each of which comprises a tube 4 of rectangular section and wear plates 5 on their middle portions. The members 3 are yieldingly supported by brackets 6 which are mounted upon the respective ends of the rod 1. Cross strips 7 are mounted directly upon the brackets 6 and are clamped thereto and to the rod 1 by bolts 6*. The cross strips 7 serve to secure the inner ends 8 of a plurality of spring supports 9 to the brackets 6, and their outer ends are connected to the upper ends of springs 10, the lower ends of which are fastened to the frame 2, by means of clips 11. The spring supports 9 are severally bent into horn form and constitute extensions of the contact members 3, to which they are secured at their outer ends. The spring supports 9 are tied together by cross strips 12 which are riveted to their inner parts, and the three contact shoe members are provided with brackets 9 which are interconnected by links 13 and 13 in order to maintain a substantially constant distance between them without interfering with their independent vertical movement. Links 1 1 are preferably interposed between one outer contact member 3 and a bracket 7 that is fastened to the portion of the cross strip 7 which engages the end 8 of the support 9 pertaining to the other outer member 5, as shown in Fig. 2 of the drawing in order to prevent material lateral movement of the contact members 3, with reference to the supporting structure.

The spring supports 9 are so formed that they constitute end guards to prevent the ends of the shoe members from becoming entangled with the overhead structure at cross overs and turn outs.

It is evident that structural modifications may be effected within the spirit and scope of our invention.

We claim as our invention:

1. In a trolley, the combination with a supporting frame having a substantially horizontal rod at the top, brackets supported upon the respective ends of the rod, and resilient means tending to prevent rotative movements of the rod, of a plurality of contact members, and supporting springs interposed between their ends and said brackets, and means for limiting the movement of said'contact members with respect to the brackets and to each other.

2. In a trolley, the combination with a supporting frame having a substantially horizontal rod at the top, brackets supported upon the respective ends of the rod, and resilient means tending to prevent rotative movements of the rod, of a plurality of contact members independently and yieldingly supported by the brackets, and links for interconnecting the contact members. Y

3. In a trolley, the combination With a supporting frame {having a substantially horizontal rod at the top, brackets supported upon the respective ends of the rod, and resilient means tending to prevent rotative movements of the rod, of a plurality of contact shoe members and supporting springs interposed between the ends of the contact shoe members and the brackets, and constituting guard projections as Well as supports for said members, and means for interconnecting said contact shoe members.

In testimony whereof, We have hereunto subscribed our names this 14th day of June, 1910.

MARTIN ERGENZINGER. HENRY S. DAY.

WVitnesses:

NM. S. BROOK, M. H. MoKEoN.

Copies of this 5mm may be obtained for cents each, by addressing the Commissioner of Patents. Washington, D. G. 

